27690 Public Meeting Presentation final 4-14-2016

Portsmouth 27690

Portsmouth 27690

Bridge 192/106

US Route 1 Bypass over

Hodgson Brook

Bridge # 190-106

Portsmouth 27690

Existing Bridge Information

� Carries Route 1 Bypass over Hodgson Brook

� 5-cell concrete box culvert, each cell 8’w x 6 1/2’h

� Constructed in 1940, modified in 1966 (widened roadway)

� Roadway width is approximately 78 feet and includes 4 travel

lanes, 1 turning lane, a median and shoulders

� AADT = 40,000 vehicles, 8% Trucks

Portsmouth 27690

N

Portsmouth 27690

Downstream Elevation

Portsmouth 27690

Upstream Elevation

Portsmouth 27690

Route 1 Bypass at Borthwick Ave facing the Traffic Circle (NW)

Portsmouth 27690

Route 1 Bypass at Hodgson Brook – facing away from traffic circle (SE)

Portsmouth 27690

Bridge Condition

� Culvert has a condition rating of 4 (poor)

� Bridge is ‘Structurally Deficient’

� Sufficiency rating = 47%

� Extensive deterioration of concrete and steel reinforcing

primarily along the bottom edge of all box culvert ‘piers’

� Intermittent deterioration of concrete and steel

reinforcement on the underside of the ceiling slabs. With the

heaviest occurring on the last 3’ of the down stream end.

Portsmouth 27690

Deterioration of box culvert ‘Piers’

Portsmouth 27690

Deterioration of box culvert ‘Piers’

Portsmouth 27690

Deterioration of culvert top slab

Portsmouth 27690

Deterioration of culvert top slab

Portsmouth 27690

Options

� Do Nothing

� Culvert Rehabilitation

� Culvert Replacement

Portsmouth 27690

Culvert Rehabilitation

� Extend service life of

culverts, 20 years

� Concrete patch and repair

or

� Culvert slip-line

Slip-line operation

Portsmouth 27690

Culvert Rehabilitation – Pros/Cons

Pros:

� Less expensive than replacement

� Can be completed with limited impact to traffic

� Limited impact to utilities

Cons:

� Short term solution

� Potential reduction in hydraulic capacity

� Provides no improvement to aquatic passage

Portsmouth 27690

Culvert Replacement

� 75 year design life

� Replace culvert with single span, open bottom structure

� Use Accelerated Bridge Construction (ABC) techniques

to minimize construction duration and impact to traffic

� Phased construction

� Full roadway closure

Portsmouth 27690

Culvert Replacement

� 75 service life

� Natural bottom – improves aquatic passage

� Little or no effects on hydraulics

Pros:

Portsmouth 27690

Culvert Replacement

� Traffic Control

a) Phased - One-lane in each direction, two-way traffic

b) Full Closure & Detour - with Accelerated Bridge Construction

c) Emergency Access Routes

� Utilities Impacts

� Increased ROW Impacts

� Increased Environmental Issues

� Historic Issues

� Significant cost increase

Cons:

Portsmouth 27690

Phased - Traffic Control

One-lane each direction (Two-way) Traffic

� Maintaining traffic during construction

(40,000 AADT with 19,000 capacity)

� Significant backups expected – may extend into the circle

� Duration of construction more than double full closure option

Portsmouth 27690

Full Closure & Detour - Traffic Control

� Considerations for Emergency Vehicles & School Bus Routes

� Best times of year (least amount of traffic)

� Construction schedule vs. other City projects

� How do we maximize Accelerated Bridge Construction potential

4 ¼ miles7 minutes

Portsmouth 27690

Gas, Water, Sewer, Drainage, Overhead Wires

gas

sewer

water

Utilities

electrical

gas

Portsmouth 27690

Utilities

Gas, Water, Sewer, Drainage, Overhead Wires

Portsmouth 27690

Right Of Way

Portsmouth 27690

Coordination To Date (Environmental Resources)

� City Officials

� Hodgson Brook Advisory Board

� NH Coastal Program

� NH Fish & Game

� NHDOT Traffic Bureau

26

� Projects Must Follow Section 106 of the National Historic Preservation

Act

� Section 106 Requires Consideration of Cultural Resources, Including

Historic Buildings, Structures and Archaeological Deposits

� The NH Division of Historical Resources (NHDHR) Acts as the State

Historic Preservation Office (SHPO)

� On Going

Cultural Resources

27

� Architectural Historian:� Reviews the project area to identify potentially historic buildings

or structures

� On Going

� Archaeologist:� NHDHR will check to see if there are any archaeological

concerns with the anticipated project area

� On Going

Cultural Resources

28

� Information will be Reported to NHDOT and NHDHR For Technical Review

and Consultation. This will include the “Determination of Effect” if any Cultural

Resources are Found

� Interested Persons or Organizations May Request “Consulting Party” Status

from FHWA

Contact Jamie Sikora

(603) 401-4870

jamie.sikora@fhwa.dot.gov

Cultural Resources

29

� Check Project Limits for Natural Resources

Such as Hodgson Brook

� On going

Natural Resources

Portsmouth 27690

Anticipated Project Timeline

� Alternatives Analysis – through May, 2016

� Complete preliminary design – December, 2016

� Permitting – 2018

�Construction – 2019

Portsmouth 27690

Your Input is needed

� Do Nothing, Repair or Replace

� Traffic Impacts

� Phased

� Full Closure & Detour

� Emergency Access Routes

� Business Impacts

� Preferred Construction Timing

� OtherThank You

Borthwick Ave

Portsmouth 27690

Portsmouth 27690

Section 106 Statement Requirements

The evaluation of environmental and cultural resources impacts within the project limits is on-going. The resources and impacts of the preferred option chosen will be documented in an Environmental Study, which will be made available for public review.

For Cultural Resources, the project will need to comply with the requirements of Section 106 of the National Historic Preservation Act of 1966. This act requires the Department to identify and assess the project’s impacts to cultural resources, which are building, historic districts, and structures, as well as archaeological sites, that are generally greater than 50 years old.

These regulations offer owners of historic properties directly affected by the project or agencies that possess a direct interest in the historical resources an opportunity to become more involved in an advisory role through meetings and commentary. They may become what are known as Consulting Parties to the Section 106 process.

The lead Federal Agency for this project is the Federal Highway Administration. Although the role of a consulting party is advisory in nature, FHWA must consider a consulting party’s input carefully before making a final decision on how the project will affect historic properties.

Consultation recognizes the importance of local involvement in the decision making process. If you wish to become a consulting party, please contact me after the meeting.

Additionally, the Federal Highway Administration’s Section 4(f) of the DOT Act regulations require the evaluation of impacts to historic and recreational properties to determine whether alternatives which avoid or minimize impacts to these properties are reasonable or prudent.

An historical survey will be conducted during the development of this project. The Department will continue to coordinate with theNH Department of Historical Resources (NHDHR) and the Federal Highway Administration (FHWA) regarding historic properties or historic districts determined to be located within the project limits.

Mr. Jamison S. SikoraNH Division Environmental Programs Manager

Federal Highway AdministrationJ.C. Cleveland Federal Building53 Pleasant Street, Suite 2200

Concord, NH 03301jamie.sikora@dot.gov